新冀教版九年級全一冊英語 Lesson 26 教案

1、Un i t 5 Look i nto Sc i enceLesson 26 Keep the CandIe Burning知識目標單詞regret, examination, pain, wake up, get dressed, get詞組keep.burning, use up, one-fifth句型Let the candle burn for two or three minutes.When the candle stops burning, it has used up all the oxygen in the air.Because about one fifth of t

2、he air is made up of oxygen, the water rises and fills about one fifth of the jar. How far does it rise?技能目標能聽懂本課時的聽力材料，能說出本課時的重 要句型，能運用句式用英語談論學習方法掌握文中重點短語和句型。能夠熟練記憶、使用match, use up等單詞和短語。Step 1 ： Warming upWhafs this? (Its a candle.)Yes, its a burning candle. We will have an interesting class. Can

3、you guess what we will do in this class? There are some things that may be used in an experiment. Do you want to know what will happen? Today we?ll learnLesson 26： Keep the Candle Burning.設計意圖：利用帶來的教具，憑著學生對科學強烈的求知欲和好奇心，學習本 課的新詞，并鼓勵他們表述實驗。Step 2： Presentation1 .Watch, Say and Fill(l)What do we need?W

4、e need a candle, a candle holder, a big glass jar, a shallow dish, some water and a lighter.(2)What do we do?First, the candle the candle holder.Then the candle holder the dish.Third the dish water.Fourth, the candle.Fifth, the candle for two minutes.magine and PredictIf I put the jar over the candl

5、e until the top of the jar rests on the dish, what will happen?Im not sure./Um sure it will.I think. Maybe.Do, Observe and AnswerPut the jar over the candle carefully until the top of the jar rests on the dish.(The candle stops burning. The water rises up.).Then do Exercises 1 and 2 on Page 69設計意圖：教

6、師示范實驗，同時描述實驗過程，讓學生熟悉實驗流程，并讓學 生在聽的過程中填出關鍵詞，為下一步做實驗做好基礎，并討論會發(fā)生什么。表達本單元主題Talking About ScienceoStep 3 ： Listen, read and think.Why did the candle stop burning?Because it has the oxygen in the air.(used up).Why did the water rise?Because the force outside the jar is than the force inside the jar.(strong

7、er).How far did the water rise?Because there is about oxygen in the jar, so the water rises and fills aboutof the jar.(one fifth, one fifth)Step 4： Project.Do the experiment in groupsRead about the experiment in this lesson. With a group of classmates, practice the experiment. Do your experiment in

8、front of the class. Dont forget the following things：First, describe your experiment.Second, ask the class what they think will happen.Third, do the experiment.Finally, ask the class if the result is what they expected.組長分配任務，一人寫實驗報告，一人做實驗，其他人用英語描述實驗過程， 必須用英語描述，否那么實驗為失敗，小組間比賽，實驗成功且完成快的組，獲 得一顆星獎勵。.Wr

9、ite the experiment reportStep 5 ： Explain the language notes of the text to the class.Keep the candle burning!讓蠟燭燃燒！keep. burning使燃燒。keep sth.(sb.)doing使某物(某人)保持做某一動作狀TqX o.useup用光，耗盡。表示完全，徹底。3.one-fifth五分之分數的表達：分數由分子及分母兩局部構成。用英語表達時，分子用基數形式，分母用序數 詞形式。假設分子為1時，那么分母的序數詞為單數形式；假設分子大于1時，那么分 母的序數詞用復數形式。如：1/3, one third,三分之一；1/5, one fifth,五分之一；3/4, three fourths, 四分之三；2/5, two fifths,五分之二Jim all his money to buy the puter.A fixed upB . used upC. ate upD. GotHave you finished the work?一Not yet, but no matter how hard it is,well keep untilwe finishit.A.